Fluid pump



.March 24, 193.1. KEMLBEG.h A 1,797,491

v FLUID PUMP Filed March 22, 1929 2 Sheets-Sheet lv IN VEN TOR.

' L s 'ff' f ATTORNEJI( 1? Eg Wr I' Patented Mar. 24, 1931 UNITE@ STATES PATENT Figi@ KARL E. AHLBERG, OF CULVER CITY, CALIFORNIA FLUID :PUMP

Application filed March 22, 1929. Serial No. 349,220.

5 means of which a flow of liquid to the pump 5 specification.

chamber and the discharge of the same therefrom is effected when the impeller is rocked or oscillated in progressive fashion about a changing fulcrum substantially in accordance with the movement produced by rolling one cone over another.

Another object is to provide fluid pump of simple design and compactarrangement adapted to displace a maximum volume of fluid in a given period of time and so assembled that parts thereof may be readily detached and replaced when and if necessary.

A main object of invention is to provide a simple, effective and durable pump adapted for use in deep Wells, for Water and oil, and

the'provision of rotatable means for operat-A ing the impeller. I

Other objects and advantages of the invention will appear during theprogress of this l have shown a preferred form of pump embodying my invention in the accompanying' drawings, in which Fig. l is a view of my pump assembled and mounted for use in a deep Well, the Well casing being shoivn in section.

Fig. 2 is an enlarged view of the pump partially in section.

VFig. 3 is a sectional plan of the pump on line 3 3 of Fiq. l. Y

Fig. 4t is a longitudinal section of on lineleof Fig. 3.

Fig. 5 is a transverse section of the p'ump on line 5 5 of Fig. 4. y

Fig. 6 is a bottom end view of the pump on line 6 6 of Fig. 1.

Fig. 7 is a fragmentary section on line 7 7 of Fig. 6.

Fig. 8 is a transverse section on line 8 8 of Fig. l.

Fig. 9 is an elevation of a Well casing with a tandem pump in a deep Well casing.

As shown in Fig. l, the pump proper comprises a composite casin g including end members A and A1 and intermediate annular members A2 and A3 which are held together the pump in operative position by means of a series of bolts Ae extended therethrough. The end members A and A1 have outwardly directed extensions A5 and A6 respectively which support frictionless bearings A7 and A8 in anl alinement for rotatably receiving a T he ends of the extensions A5 and A6 may be closed by means of caps A9 and A10 respectively, as shown., and the shaft B may be extended through the upper closure A10 as shown for operative connection with a motor M which is mounted in the Well casng C, as shown in Fig. l.

A discharge pipe l) is attached to the pump casing Al by means of the bolts All Which entend through the flange D1 on said pipe. internally of the pump casing I provide an mpeller il which is operably mounted on a central section B1 of the drive shaft B intermediate the bearing portions B2 and B3 1vhich are rotatably mounted in the bearings A? and A8 respectively. 'lf he pump chamber A11 is annular and 1s formed intermediate l: members A2 and A3.

he members A and A1 and internally of the rl`he outer periphery A12 of said chamber is spherically formed rlhe central section B1 of the drive shaft which supports the impcller E is inclined at an acute angle to the axis of the bearing portions B2 and l?) so that when the drive shaft B is rotated the impeller E will be oscillated progressively in chamber A11.

ri`he casing members A and A1 have sphericallj.v formed annular portions A14 and A15, respectively, which engage the spherically formed ieriphery E1 of the body E2 of the mpeller. and also spherically formed entensions E3 and which are detachably held on the opposite sides of the impeller body. rhe

mpoller has an annular vane E5 which engages the Wall A12 of the pump chamber at ts periphery and is slotted radially at F6 to receive an abutment E7 formed on or atached to the members A2 and A3 of the casng.

T he portion Bl of the drive shaft is rotatably supported in the impeller E by means of opposite sets of roller bearings E8, ES which are held in cones E9, E9 on the portion B1 and engage the beveled faces El() of the impeller. The cones E9 are held between flanges Bel and B5 which are right angularly disposed relative to the portion Bl,

The casing member A is provided with an inlet F at one side of the abutment E?, as shown in Figs. 5 and 6, while the memberAl is provided with an outlet Fl on the opposite side of said abutment. The chamber All is in communication with the outlet Fl at opposite sides thereof by means of passages F2 and F3 which are cored in the casing members A, Al, A2 and A3. rhe outlet Fl is in communication with the chamber D2 of the discharge casing I). rIhus, as the impeller vane E5 is rocked or oscillated in the pump chamber All a flow of liquid is induced through the inlet F into the pump chamber and is caused to foll a circular path in the chamber and is exhausted through the outlet Ill into the pipe D. T he by-passes F2 and F8 which connect the chamber All with the outlet Fl serve to relieve and pr vent a back pressure wien the impeller moves to the left, as seen in Ll, relative to the inlet and outlet.

It will be apparent that the impeller is nonrotatably held by reason of the fact that the abutment E? in the pump seats in a slot in the impeller vane, as shown in 5. Therefore, the rotation of the shaft B within the impeller causes the impeller to roll or oscillate progressively at its periphery in a manner similar to the rolling of one cone over another. r1fhis action of the impeller varies the area of the pump chamber All successively at different points from the inlet to the outlet and effects a continuous flow of fluid through the pump.

My pump is particularly adapted for use in deep wells, as shown in Fig. l, and may be connected with a. motor M which is usually mounted in a casing lll. rlfhe motor casing lli l tightly lits the well casing C and is stationarily supported trierein by suitable means. rEhe discharge pipe D of the pump telescopes into and is suitably connected with the lower end of the casing lll so that the fluid discharged from the pump may move upwardly around the periphery ofthe motor and thence outwardly through a discharge pipe M2. rl`he pump tightly iits the bore of the well casing C so that the oil from the chamber Cl below the pump must necessarily be forced through the pump and thence upwardly througl the chamber D2 into the chamber M3 of the motor casing and thence outwardly through the pipe M2. rIhe pump shaft B be connected with the motor shaft M4 by means cf a suitable coupling M5.

A pump suoli as I have described when employed in a deep Well casing is free from valves and other parts which necessarily require attention in order to maintain the.

pump in operation. Thus my pump may be used in deep wells for sustained periods of time without attention.

In order to provide maximum efficiency in the operation of the pump when used in deep oil or water wells, I may employ two pumps substantially of the character illustrated in Fig. 4 and arranged tandem fashion within the well casing C. In such event the pump would consist of an upper unit U and a lower unit U connected by a casing Ul having a chamber U2 therein. In this arrangement of pumps the extension A6 on the lower pump unit and the extension A5 on the upper pump unit may be suliiciently elongated and attached together by means of bolts U3 so as to provide the annular chamber U2 between the outlet F1 of the lower pump and the inlet F of the upper pump. The shafts B, B of the tandem arranged pump units are operatively connected by suitable coupling members U5 and U6 connected to said shafts respectively, and the shafts and the coupling devices are housed within the extensions A5 and A6.

The operation of the tandem pump is as follows:

The liquid is drawn from the chamber C in the well casing C through inlet F into the chamber All, of the lower pump unit U', and is discharged from the chamber All through outlet F1 into the annular chamber U2, from which it is delivered through the inlet F of the pump U to the chamber All, and from said chamber through outlet F1 to' chamber M8 of casing M1, and thence outwardly through discharge pipe M2.

What I claim is:

1. A fluid pump comprising a casing having conical side Walls spaced apart and inner and outer spherically formed coaxial walls, extensions formed on opposite sides of said casing having alined bearings therein, a shaft journaled in said bearing and provided with an intermediate crank portion disposed diagonally relative to the axis of the bearing portions of said shaft, cones mounted on said crank portion, frictionless bearings carried by said cones, an impeller having an enlarged annular inner portion rotatably receiving said bearings, and an annular vane engaging the outer wall of said casing, an abutment held in said casing slidably engaging said vane, inlet and outlet means in the casing on opposite sides of said abutment, and cylindrical members attached to the body of said impeller and engaging the inner wall of the casing, for the purpose described.

2. In a fluid pump, the combination with a shaft having spaced bearing portions and an intermediate crank portion diagonally disposed relative thereto, means for rotatably supporting said shaft, cones detachably mounted on said bearing ortion, frictionless bearing members rotatably mounted on said cones, an impeller having an annular body portion with oppositely formed cones engaging said bearing members and an annular vane extending therearound, spherical members detachably held on the body of said impeller and enclosing said bearing members, and a casing having inner and outer spherical Walls and conical ends engaging said impeller, as described.

3. A fluid pump as characterized in claim 2, including means formed on said shaft at the extremities of said crank portion for preventing the longitudinal movement of said cones.

4. A fluid pump as characterized in claim 2, including means for preventing the rotation but permitting the oscillation of said impeller when said shaft is rotated.

5. A fluid pump as characterized in claim 2, including a plate stationarily held in said casing, an annular chamber being formed in and between the inner and outer spherical walls of said casing, said plate subdividing said chamber into inlet and outlet portions, and inlet and outlet means connected respectively With said chamber on the opposite sides of said plate.

KARL E. AHLBERG. 

